Blood Alcohol Content (BAC) is a measure of the percentage of alcohol in your bloodstream. A BAC of 0.10% means that 0.10% (one-tenth of one percent) of a person's blood, by volume, is alcohol. This calculator provides an estimate of your BAC using the Widmark formula. It is intended for educational purposes only and should not be used to determine if you are fit to drive or operate machinery.
Blood Alcohol Content (BAC) Calculator
Estimate your Blood Alcohol Content (BAC) based on what you've had to drink, your weight, and time.
Blood Alcohol Content (BAC) Calculator
Estimate your BAC based on weight, gender, and alcohol consumed.
For Informational Purposes Only
This is a rough estimate. Do not use this calculator to determine if it is safe to drive. Many factors affect BAC, and individual results will vary.